MUST READ
CONTENTS
P1 OF 40
All Units Shall Be Installed by Experienced or Licensed Contractor Or
Technician. Read Manuals before Installation.
YMGI Group Shall NOT Take Any Responsibilities for Any Damage or
Loss Due to Do-It-Yourself(DIY) self-installation and other Improper Installation or Operation or
Natural Disaster.
Connect All Wiring Securely. Loose Wire or Other Bad Contact May Cause
Arc or Overheating and Fire Hazard.
Following NEC, State and Local Codes and Installation Instructions of All
Units, Otherwise Unit Warranty Will Be Void and Serious Damage To People Or Property May Be
Caused.
Don't Supply Power until All Wiring and Tubing and Checking is
Completed. Ground the Unit Following Instructions and NEC, State and Local Codes.
End User Technician Contact of Technical Support-Manufacturer
Toll Free Number: 1-866-833-3138 x 703
Email: techsp@ymgigroup.com
(End user needs to contact installation or service technician to check the unit, before the
technicians contact manufacturer technical support-straight technical communication)
P2 OF 40
USER NOTES AND SERVICE LOG
DISASSEMBLY PROCEDURE
EXPLOSIVE VIEW AND SPARE PARTS LIST
CONNECT REFRIGERANT PIPES BETWEEN INDOOR AND OUTDOOR UNITS
INSTALLATION-INDOOR UNIT
HEIGHT LIMITS OF INDOOR AND OUTDOOR UNITS
INSTALLATION LOCATIONS & CAUTIONS
SYSTEM LAYOUT & INSTALLATION CLEARANCE
REMOTE CONTROL & UNIT FUNCTIONS
WIRING DIAGRAM
UNIT VIEWS,DIMENSIONS & MOUNING BRACKET CLEARANCE
TECHNICAL SPECIFICATIONS
PART NAME
IMPORTANT NOTES
PIPING GUIDE
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WARRANTY AND TECH. SUPPORT
LIMITED PRODUCT WARRANTY POLICIES
KIND REMINDING & WARNING-READ MANUAL(S) BEFORE INSTALLING UNITS
LIMITED PRODUCT WARRANTY REGISTRATION CARD
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CUSTOMER AND TECHNICIAN MUST READ
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World ! YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
KIND REMINDING
KIND REMINDING & WARNING-READ MANUAL(S) BEFORE INSTALLING UNITS
1. Hiring a currently licensed HVAC contractor company who you know and trust, as the only one liable installing
party, to take care of ALL the installation job, is the only right choice/starting of all.
2. Not to try to hire a technician to do your job at side which the contractor company doesn't know about.
3. Not to try to install your units partially by yourself or another handyman and then have licensed HVAC
technician to do the key work. More than one installation party will make you hard to identify the liabilities if the
unit is not working later. DIY or hiring more than one party to install your units will lose your factory warranty.
4. Have your installer read through the manual, before doing any installation.
5. All YMGI products are fully tested to pass rigorous safety and performance standards and other related
requirements in its industry, before being packed. We use famous brands high quality of compressors, motors,
control boards, valves and other parts.
6. Field Installation takes critical role in putting these units to the similar conditions as we designed and tested in
our factory labs, third party labs and various fields/applications following related industrial and company
standards.
7. Field installation details matter with all: 1) if your units will work correctly and properly at installation; 2) if your
units will work well after your installer leaves your job site; 3) if your units will work well towards or exceeding
its lifetime.
8. Typically licensed HVAC technicians will do good job. But, license or experience is just not enough. Every
installation needs careful and detailed handling everywhere and every moment, in order to reach higher
qualities and better performance and longer lifetime for your installed units.
One or Few of the Following May Fail Your Unit, Even Dry out and Damage Your Compressor Sooner or
Later. And These Will Make You Lose Your Factory Warranty.
Common Mistake or Error or Negligence That Some Installer May Generate During the Installation, but
You May not Notice or Know Even After Installation is Finished:
1) Foreign substances brought into copper line due to many reasons with the most possible one being not
capping/covering/sealing copper ends before pulling through structures;
2) Not making an oil P-trap in the copper line of the indoor unit that is 18' or more below its outdoor unit;
3) Cross-piping or cross-wiring between some indoor units/zones (multiple zone systems, or few single zone
systems);
4) Not conducting positive leakage testing by charging dry-nitrogen and soap-bubble checking;
5) Not conducting negative leakage testing by evacuating the copper lines about 30 minutes and then waiting for
at least 5 minutes before checking if vacuum level can be maintained 500 micron or below;
6) Not conducting positive prior to negative leakage testing;
7) Not selecting right size of wires or proper circuit breaker;
8) Kinks in copper line;
9) Not making flare well, or not centering flare with that of nut, or not tightening the connections;
10) Not trial testing the indoor units one by one, any two, any three...all, in order;
11) Not reading technical data (temp./pressure/current) after the system is stabled (normally about 10 minutes
after starting). Reading these data before the system is stabled will give false information that you can not
count on nor should use to judge whether the units work properly or not.
12) Not filling at all, or not filling completely and correctly, the technician checklist inside the warranty registration
form that is either inside your manual or coming along with your product(s)...
In the past, we have heard about some bad installations. And so we would pass the benefits of installing units
carefully and correctly that we know and good suggestions that we can make, in order to eliminate or limit the
trouble that you may encounter during or problems that you may find after your units are installed.
Though you may see some statement in the manual about the consequences of not following our
recommendations or not meeting our requirements that may sound strong or imperative or mandatory, if you
don't think any of these contents apply to the installation of your units, please put those contents aside.
All we say and we do is towards the ultimate goal to have your units work for you and/or your customers the right
way right from its being installed throughout its lifetime as long as possible.
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